🩻 Ovarian-Adnexal O-RADS (US) Risk Stratification
Look up the malignancy risk and management for an ACR O-RADS US ovarian-adnexal category (0–5). Instant, browser-side.
Clinical takeaway
O-RADS 3 with a solid lesion still warrants MRI characterisation.
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When to use
Translate an O-RADS US category into a follow-up, MRI or gyn-oncology pathway.
How it works
1 normal (0%), 2 almost certainly benign (< 1%), 3 low (1–< 10%), 4 intermediate (10–< 50%), 5 high (≥ 50%) risk of malignancy.
Key points
- O-RADS 3 with a solid lesion still warrants MRI characterisation.
- O-RADS 4 → MRI or gynaecology evaluation; consider CA-125.
- O-RADS 5 (irregular solid, high colour score, ascites/peritoneal nodules) → gyn-oncology referral.
- Categories follow the US lexicon (lesion type, solid component, colour score).
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| O-RADS US category | 0 — Incomplete evaluation |
|---|
→ManagementFurther evaluation
- Category：O-RADS 0: Incomplete evaluation
- Management：Inadequate assessment due to technical/patient factors: repeat or use transvaginal ultrasound / MRI for further evaluation
- Note：O-RADS US categorises by lesion type (unilocular/multilocular/solid), solid component and colour score; the final category needs physician integration of the lexicon
| O-RADS US category | 5 — High risk |
|---|
→ManagementGyn-oncology referral
- Category：O-RADS 5: High risk (≥ 50%)
- Management：Irregular solid lesion, multilocular with solid component and high colour score, or ascites/peritoneal nodules: refer to gyn-oncology
- Note：O-RADS US categorises by lesion type (unilocular/multilocular/solid), solid component and colour score; the final category needs physician integration of the lexicon
Frequently asked questions
- What is Ovarian-Adnexal O-RADS (US) Risk Stratification?
- Look up the malignancy risk and management for an ACR O-RADS US ovarian-adnexal category (0–5). Instant, browser-side.
- How is Ovarian-Adnexal O-RADS (US) Risk Stratification calculated? What is the core formula?
- 1 normal (0%), 2 almost certainly benign (< 1%), 3 low (1–< 10%), 4 intermediate (10–< 50%), 5 high (≥ 50%) risk of malignancy.
- When is Ovarian-Adnexal O-RADS (US) Risk Stratification used?
- Translate an O-RADS US category into a follow-up, MRI or gyn-oncology pathway.
- What are the key clinical points for Ovarian-Adnexal O-RADS (US) Risk Stratification?
- O-RADS 3 with a solid lesion still warrants MRI characterisation. O-RADS 4 → MRI or gynaecology evaluation; consider CA-125. O-RADS 5 (irregular solid, high colour score, ascites/peritoneal nodules) → gyn-oncology referral. Categories follow the US lexicon (lesion type, solid component, colour score).
- What are the limits and cautions when using Ovarian-Adnexal O-RADS (US) Risk Stratification?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- How is Ovarian-Adnexal O-RADS (US) Risk Stratification calculated in practice? Can you show a worked example?
- Inputs: O-RADS US category 0 — Incomplete evaluation → Result: Management Further evaluation（Category: O-RADS 0: Incomplete evaluation, Management: Inadequate assessment due to technical/patient factors: repeat or use transvaginal ultrasound / MRI for further evaluation, Note: O-RADS US categorises by lesion type (unilocular/multilocular/solid), solid component and colour score; the final category needs physician integration of the lexicon） Inputs: O-RADS US category 5 — High risk → Result: Management Gyn-oncology referral（Category: O-RADS 5: High risk (≥ 50%), Management: Irregular solid lesion, multilocular with solid component and high colour score, or ascites/peritoneal nodules: refer to gyn-oncology, Note: O-RADS US categorises by lesion type (unilocular/multilocular/solid), solid component and colour score; the final category needs physician integration of the lexicon）